Pengaruh Variasi Penambahan ragi dan Lamanya Waktu Fermentasi Terhadap Hasil Fermentasi Etanol dari Serbuk Gergajian Kayu Ulin (Eusideroxylon Zwageri t et b
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 2007
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/27358/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=10414 |
Daftar Isi:
- The research was aimed to assess the influence of different levels of yeast addition and duration of fermentation on the amount and percentage of ethanol produced from sawdust of ulin wood as raw material. Method used in this experiment was chemical hydrolysis of cellulose by using nitric acid (HN03) as chemical agent. This substrate was inoculated into yeast cell (khamir) to convert glucose into ethanol. The amount of ethanol (ml) was obtained from distilled water (ml) multiplied by the azeotropic value of ethanol (95,5%), while the value ethanol (%) obtained was from the amount of ethanol (ml) divided by the amount of distilled water (ml) multiplied by 100 percent. The study used a factorial design of 3 x 3 with 3 replications and the parameters used were A factor (amount of yeast) consisting of 5,10, and 15 grams, respectively, and Bfactor (duration offermentation) consisting of 1, 3, and 5 days, respectively. Significant differences of ANO V A at test levels of 5% and 1 % will be continued by interaction test between the two factors to assess the influence of each factor on the amount and percentage of ethanol. Results indicated that thefactors of yeast amount, duration offermentation and interaction between the two gave a very significant influence on the amount of ethanol (ml) and its percentage (%) as a result of fermentation. Following the treatment on ulin wood sawdust, the lowest yield of ethanol was found at A}B} treatment (5 g, 1 day) with. 1.69 ml, while the highest at A3B3 treatment (15 g, 5 day) with 5.19 mi. 1n terms of ethanol percentage, the lowest was found at A}B} treatment with 9.4% and the highest at A3B 2 treatment with 29.9 %. Keywords: Eusideroxylon zwageri T et B, fermentation period, yeast addition, ethanol production.